Software Development Life Cycle Models

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SDLC is a process for developing information systems through investigation, analysis, design, implementation and maintenance. SDLC is also known as the development of information systems or applications. It’s also known as the Waterfall Model.There are several methodologies or models that can be used to guide the life cycle of software development. Some of these include the following:

  • Linear or Waterfall Model
  • Agile methodology
  • Rapid Application Development (RAD)
  • Joint Application Development (JAD)
  • Prototype

The Software Development Life Cycle ( SDLC) is a whole process of formal, logical steps taken to develop a software product. The phases of SDLC may vary slightly, but generally include the following:

Software Development Life Cycle ( SDLC)
Software Development Life Cycle ( SDLC)

Analysis of Requirements

The first task in creating it is to extract the requirements of the desired software product. While customers are likely to believe that they know what software needs to be done, it may require skills and experience in software engineering to recognize incomplete, ambiguous or contradictory requirements.

Specification

The specification is the task of accurately describing the software to be written in a mathematically rigorous manner.In practice, most successful specifications are written to understand and fine-tune with the applications Although safety-critical software systems are often carefully specified prior to application development, these have already been well developed. Specifications are most essential for external interfaces which need to remain stable

Architecture of software


The architecture of the software system refers to the abstract representation of the system. Architecture is concerned with ensuring that the software system meets the requirements of the product as well as ensuring that future requirements can be addressed. The architecture step also addresses interfaces between the software system and other software products, as well as the operating system in the hardware or host.

Coding

Reducing the design to the code may be the most obvious part of the software engineering work, but it is not necessarily the biggest part.

Testing

Testing parts of software, especially where two different engineers have to work together, is the responsibility of the software engineer.

Documentation

Documenting the software’s internal architecture for potential servicing and updating is an essential task. Documentation is the most important external-interface document

Software Training and Support

A significant number of software projects fail because the developers don’t know how long a development team will take to build software if none of them end up using it. Occasionally people are resistant to change and fear being new, and as part of the deployment process, it is very important to have training classes for the most enthusiastic users of software (build excitement and trust), shift training to neutral users in tandem with avid supporters, and finally incorporate the rest of the organization into their adoption. Users will have a lot of questions and problems with software

Maintenance Services

This may take much more time than the program’s initial creation to update and upgrade software to deal with newly found issues or specifications. Not only can the code not match the original design, but it can only be essential for a software developer to decide how software functions after it is completed. Approximately 2/3 of all software work is maintenance, but this can be misleading. A little error fixing is part of it.

Refer to the SDLC Documentation

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